Rocketdyne is an American aerospace manufacturer known for its development of rocket engines. Founded in the 1950s, the company has played a significant role in various space programs, including those for NASA and the United States Department of Defense. Its engines have powered many historic missions, including the Saturn V rocket that took astronauts to the Moon. In 2013, Rocketdyne was acquired by Aerojet Rocketdyne, a merger that combined their expertise in propulsion systems. The company continues to innovate in the field of rocket technology, focusing on both liquid and solid propulsion systems for a range of applications, from satellite launches to deep space exploration.